Area Code 203-916 located in NORWALK, FAIRFIELD, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 916 City : NORWALK County : FAIRFIELD State : CT (Connecticut) NXX Use Type : Landline NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 09001 LATA (Local Access Transport Area) : 920 Rate Center : BRIDGEPORT ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 06855 Other Information NPANXX : 203916 County Population : 0 Switch CLLI (Common Language Location Identifier) : SMFRCTPUDS0 MSA CBSA (Core Based Statistical Area) : Bridgeport-Stamford-Norwalk, CT MSA CBSA Code (Core Based Statistical Area) : 14860 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : LEVEL 3 COMMUNICATIONS, LLC - CT OCN (Operating Company Number) : 4800 Coverage Area Name : NORWALK Latitude : 41.1003 Longitude : -73.4187 ‹ previous : 203-916 next › : 203-917 Telephone Number List 203-916-0000 ~ 203-916-9999